Fire Stop Systems Brochure SA727 - USG Corporation

Fire Tests UL System Test Criteria Description
Floor/Wall Assembly C-AJ-5148a 5
Floor/Wall Assembly C-AJ-5149 a
4B
3
5
3
2
A
3
4
4B
3
2
Section A–A
Section A–A
A A
2
2
A
Penetration Fire Tests
5
4A
Intumescent-Type Materials
1
1
24 USG Fire Stop Systems
F-Rating
1 Hr.
T-Rating
1/4 Hr.
F-Rating
2 Hr.
T-Rating
1 Hr.
1. Concrete floor or wall assembly, minimum 4-1/2� thickness. The
annular space shall be minimum 0� to maximum 1-3/8� within the
firestop system.
2. Metallic pipe:
A Steel pipe:
8� diameter (or smaller) Schedule 10 (or heavier) steel pipe.
B Iron pipe:
8� diameter (or smaller) cast or ductile iron.
3. Pipe covering:
Nom. 3� thick cellular glass insulation.
4. Metal jacket:
Minimum 10� wide aluminum jacket tightly wrapped around the
pipe insulation, secured with a hose clamp. Jacket to be abutting
the surface of the sealant on the top surface of the floor or both
surfaces of the wall.
5. Type IA:
Minimum 1� thickness of sealant applied within the opening,
flush with the top surface of the floor or both surfaces of the wall
assembly. A minimum 1/2� diameter cant (45° angle) bead of sealant
shall be applied at the insulation/concrete interface at the point
contact locations.
1. Concrete floor or wall assembly, minimum 4-1/2� thickness.
2. Metallic pipe:
A Copper pipe:
4� diameter (or smaller) regular (or heavier) copper pipe.
B Copper tubing:
4� diameter (or smaller) Type L (or heavier) copper tubing.
C Steel pipe:
4� diameter (or smaller) Schedule 40 (or heavier) steel pipe.
D Iron pipe:
4� diameter (or smaller) cast or ductile iron pipe.
E Conduit:
4� diameter (or smaller) EMT or steel conduit.
3. Pipe covering:
Glass fiber insulation; see the table below for thickness and annular
space.
Maximum Pipe Annular Forming Minimum F T
Pipe Covering Space Material Sealant Rating Rating
Diameter Thickness Thickness Thickness (hours) (hours)
(in.) (in.) (in.) (in.)
4 2 1/2 to
1-3/8
4 1/2 2 1
4A Forming material:
Mineral wool insulation b (minimum 4.0 pcf) firmly packed into the
opening to the minimum required thickness in the table above.
4B Type IA:
Minimum thickness of sealant as specified in the table above, applied
within the opening, flush with the top surface of the floor or both
surfaces of the wall.
Note
(a) Refer to the UL Fire Resistance Directory for Through-Penetration Firestop Systems
or contact United States Gypsum Company for complete information. (b) Bearing the UL
Classification Marking.